参数资料
型号: TPS40192DRCRG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10
封装: 3 X 3 MM, GREEN, PLASTIC, SON-10
文件页数: 3/38页
文件大小: 707K
代理商: TPS40192DRCRG4
www.ti.com
SLUS719C – MARCH 2007 – REVISED AUGUST 2010
APPLICATION INFORMATION
Introduction
The TPS40192 and TPS40193 are cost optimized controllers providing all the necessary features to construct a
high performance DC/DC converter while keeping costs to a minimum. Support for pre-biased outputs eliminates
concerns about damaging sensitive loads during startup. Strong gate drivers for the high side and rectifier
N-channel MOSFETs decrease switching losses for increased efficiency. Adaptive gate drive timing prevents
shoot through and minimizes body diode conduction in the rectifier MOSFET, also increasing efficiency.
Selectable short circuit protection thresholds and hiccup recovery from a short circuit increase design flexibility
and minimize power dissipation in the event of a prolonged output fault. The dedicated ENABLE pin allows the
converter to be placed in a very low quiescent current shutdown mode. Internally fixed switching frequency and
soft-start time reduce external component count, simplifying design and layout, as well as reducing footprint and
cost. The 3 mm × 3 mm package size also contributes to a reduced overall converter footprint.
Voltage Reference
The band gap cell is designed with a trimmed 591-mV output. The 0.5% tolerance on the reference voltage
allows the user to design a very accurate power-supply.
Oscillator
The TPS40192 has a fixed internal switching frequency of 600 kHz. Tthe TPS40193 operates at a switching
frequency of 300 kHz.
UVLO
When the input voltage is below the UVLO threshold, the device holds all gate drive outputs in the low (OFF)
state. When the input rises above the UVLO threshold, and the ENABLE pin is above the turn ON threshold, the
oscillator begins to operate and the start-up sequence is allowed to begin. The UVLO level is internally fixed at
4.2 V.
Copyright 2007–2010, Texas Instruments Incorporated
11
Product Folder Link(s): TPS40192 TPS40193
相关PDF资料
PDF描述
TPS40192DRCTG4 SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10
TPS40193DRCR SWITCHING CONTROLLER, 360 kHz SWITCHING FREQ-MAX, PDSO10
TPS40195RGYR SWITCHING CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PQCC16
TPS40195PWG4 SWITCHING CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PDSO16
TPS40195PW SWITCHING CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PDSO16
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